Vodacom admin joke

I have been a Vodacom customer for more than 20 years and receive a total of 5 invoices from Vodacom, one of them having a NIL balance, as, although the invoice is sent to my address, for a client with the same surname, but not for me. I have tried telephonically on numerous occasions over the years to have this account removed and recently spent several hours on 2 different occasions in-store to try and get this removed. The last person to deal with it in-store, assured me that I would no longer receive this invoice - but predictably, this has not happened and once again it has been sent to me. Come on, Vodacom - surely it's not too hard for you to clean up your act and actually implement something you assure your (loyal) customers you will do - how hard can it be???? Very disappointed in Vodacom